Royal Siamese Army

The Royal Siamese Army was the military of Siam (Thailand) from the unification of Siam in 1238 to 1852, when the army was westernized to become the Royal Thai Armed Forces. The army was one of the major Southeast Asian militaries, often fighting against Burma to the west and Dai Nam (Vietnam) to the east. King Mongkut's westernization of the army during the 1850s established the army was a permanent force, ending the levy system.